#

# Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# under the terms of the License "Eclipse Public License v1.0"

# which accompanies this distribution, and is available

# at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

# Initial Contributors:

# Nokia Corporation - initial contribution.

#

# Contributors:

#

# Description: 

# operators for boolean logic, including a case 

# sensitive equality operator

#

define not

$(if $1,,1)

endef

define xor

$(and $(or $1,$2),$(call not,$1,$2))

endef

define equal

$(if $(1:$(2)=),,$(if $(2:$(1)=),,1))

endef

define equal_debug

$(info equal $1 $2 )$(if $(1:$(2)=),,$(if $(2:$(1)=),,1))

endef

# $(call isoneof,fred, alice bob james fred joe)  # returns 1

define isoneof

$(if $2,$(or $(call equal,$1,$(word 1,$2)),$(call isoneof,$(1),$(wordlist 2,$(words $(2)),$(2)))),)

endef

define isoneof_debug

$(info one:$1 LIST: $2 nextCAR: $(word 1,$2) nextCDR: $(wordlist 2,$(words $2),$2))$(if $2,$(or $(call equal,$1,$(word 1,$2)),$(call isoneof,$(1),$(wordlist 2,$(words $(2)),$(2)))),)

endef

#testboolean::

#	@echo -e "(call equal,dll,dll)            :  $(call equal,dll,dll)"

#	@echo -e "(call equal,,dll)               :  $(call equal,,dll)"

#	@echo -e "(call equal,thingdllthing,dll)  :  $(call equal,thingdllthing,dll)"

#	@echo -e "(call equal,dll,thingdllthing)  :  $(call equal,dll,thingdllthing)"

#	@echo -e "(call equal,dll,)               :  $(call equal,dll,)"

#	@echo -e "(call equal,,)                  :  $(call equal,,)"

#	@echo -e "(call equal,dlldlldll,dll)      :  $(call equal,dlldlldll,dll)"

#	@echo -e "(call equal,dll,dlldlldll)      :  $(call equal,dll,dlldlldll)"

#	@echo ""

#	@echo -e '(call isoneof,fred, nobby cheery fred detritus ) :  $(call isoneof,fred, nobby cheery fred detritus) '

#	@echo -e '(call isoneof,nobby, cheery fred carrot angiur)  :  $(call isoneof,nobby, cheery fred carrot angiur) '

#	@echo -e '(call isoneof,vimes,vetinari) :  $(call isoneof,vimes,vetinari) '

#	@echo -e '(call isoneof,vetinari,) :  $(call isoneof,vetinari,) '

#	@echo -e '(call isoneof,vetinari,vetinari) :  $(call isoneof,vetinari,vetinari) '